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   1 /*
   2  * arch/arm/mach-ixp4xx/nslu2-setup.c
   3  *
   4  * NSLU2 board-setup
   5  *
   6  * based ixdp425-setup.c:
   7  *      Copyright (C) 2003-2004 MontaVista Software, Inc.
   8  *
   9  * Author: Mark Rakes <mrakes at mac.com>
  10  * Author: Rod Whitby <rod@whitby.id.au>
  11  * Maintainers: http://www.nslu2-linux.org/
  12  *
  13  * Fixed missing init_time in MACHINE_START kas11 10/22/04
  14  * Changed to conform to new style __init ixdp425 kas11 10/22/04
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/serial.h>
  19 #include <linux/serial_8250.h>
  20 #include <linux/leds.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/flash.h>
  25 #include <asm/mach/time.h>
  26
  27 static struct flash_platform_data nslu2_flash_data = {
  28         .map_name               = "cfi_probe",
  29         .width                  = 2,
  30 };
  31
  32 static struct resource nslu2_flash_resource = {
  33         .flags                  = IORESOURCE_MEM,
  34 };
  35
  36 static struct platform_device nslu2_flash = {
  37         .name                   = "IXP4XX-Flash",
  38         .id                     = 0,
  39         .dev.platform_data      = &nslu2_flash_data,
  40         .num_resources          = 1,
  41         .resource               = &nslu2_flash_resource,
  42 };
  43
  44 static struct ixp4xx_i2c_pins nslu2_i2c_gpio_pins = {
  45         .sda_pin                = NSLU2_SDA_PIN,
  46         .scl_pin                = NSLU2_SCL_PIN,
  47 };
  48
  49 #ifdef CONFIG_LEDS_IXP4XX
  50 static struct resource nslu2_led_resources[] = {
  51         {
  52                 .name           = "ready",  /* green led */
  53                 .start          = NSLU2_LED_GRN,
  54                 .end            = NSLU2_LED_GRN,
  55                 .flags          = IXP4XX_GPIO_HIGH,
  56         },
  57         {
  58                 .name           = "status", /* red led */
  59                 .start          = NSLU2_LED_RED,
  60                 .end            = NSLU2_LED_RED,
  61                 .flags          = IXP4XX_GPIO_HIGH,
  62         },
  63         {
  64                 .name           = "disk-1",
  65                 .start          = NSLU2_LED_DISK1,
  66                 .end            = NSLU2_LED_DISK1,
  67                 .flags          = IXP4XX_GPIO_LOW,
  68         },
  69         {
  70                 .name           = "disk-2",
  71                 .start          = NSLU2_LED_DISK2,
  72                 .end            = NSLU2_LED_DISK2,
  73                 .flags          = IXP4XX_GPIO_LOW,
  74         },
  75 };
  76
  77 static struct platform_device nslu2_leds = {
  78         .name                   = "IXP4XX-GPIO-LED",
  79         .id                     = -1,
  80         .num_resources          = ARRAY_SIZE(nslu2_led_resources),
  81         .resource               = nslu2_led_resources,
  82 };
  83 #endif
  84
  85 static struct platform_device nslu2_i2c_controller = {
  86         .name                   = "IXP4XX-I2C",
  87         .id                     = 0,
  88         .dev.platform_data      = &nslu2_i2c_gpio_pins,
  89         .num_resources          = 0,
  90 };
  91
  92 static struct platform_device nslu2_beeper = {
  93         .name                   = "ixp4xx-beeper",
  94         .id                     = NSLU2_GPIO_BUZZ,
  95         .num_resources          = 0,
  96 };
  97
  98 static struct resource nslu2_uart_resources[] = {
  99         {
 100                 .start          = IXP4XX_UART1_BASE_PHYS,
 101                 .end            = IXP4XX_UART1_BASE_PHYS + 0x0fff,
 102                 .flags          = IORESOURCE_MEM,
 103         },
 104         {
 105                 .start          = IXP4XX_UART2_BASE_PHYS,
 106                 .end            = IXP4XX_UART2_BASE_PHYS + 0x0fff,
 107                 .flags          = IORESOURCE_MEM,
 108         }
 109 };
 110
 111 static struct plat_serial8250_port nslu2_uart_data[] = {
 112         {
 113                 .mapbase        = IXP4XX_UART1_BASE_PHYS,
 114                 .membase        = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
 115                 .irq            = IRQ_IXP4XX_UART1,
 116                 .flags          = UPF_BOOT_AUTOCONF,
 117                 .iotype         = UPIO_MEM,
 118                 .regshift       = 2,
 119                 .uartclk        = IXP4XX_UART_XTAL,
 120         },
 121         {
 122                 .mapbase        = IXP4XX_UART2_BASE_PHYS,
 123                 .membase        = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
 124                 .irq            = IRQ_IXP4XX_UART2,
 125                 .flags          = UPF_BOOT_AUTOCONF,
 126                 .iotype         = UPIO_MEM,
 127                 .regshift       = 2,
 128                 .uartclk        = IXP4XX_UART_XTAL,
 129         },
 130         { }
 131 };
 132
 133 static struct platform_device nslu2_uart = {
 134         .name                   = "serial8250",
 135         .id                     = PLAT8250_DEV_PLATFORM,
 136         .dev.platform_data      = nslu2_uart_data,
 137         .num_resources          = 2,
 138         .resource               = nslu2_uart_resources,
 139 };
 140
 141 static struct platform_device *nslu2_devices[] __initdata = {
 142         &nslu2_i2c_controller,
 143         &nslu2_flash,
 144         &nslu2_beeper,
 145 #ifdef CONFIG_LEDS_IXP4XX
 146         &nslu2_leds,
 147 #endif
 148 };
 149
 150 static void nslu2_power_off(void)
 151 {
 152         /* This causes the box to drop the power and go dead. */
 153
 154         /* enable the pwr cntl gpio */
 155         gpio_line_config(NSLU2_PO_GPIO, IXP4XX_GPIO_OUT);
 156
 157         /* do the deed */
 158         gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
 159 }
 160
 161 static void __init nslu2_timer_init(void)
 162 {
 163     /* The xtal on this machine is non-standard. */
 164     ixp4xx_timer_freq = NSLU2_FREQ;
 165
 166     /* Call standard timer_init function. */
 167     ixp4xx_timer_init();
 168 }
 169
 170 static struct sys_timer nslu2_timer = {
 171     .init   = nslu2_timer_init,
 172 };
 173
 174 static void __init nslu2_init(void)
 175 {
 176         ixp4xx_sys_init();
 177
 178         nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
 179         nslu2_flash_resource.end =
 180                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
 181
 182         pm_power_off = nslu2_power_off;
 183
 184         /* This is only useful on a modified machine, but it is valuable
 185          * to have it first in order to see debug messages, and so that
 186          * it does *not* get removed if platform_add_devices fails!
 187          */
 188         (void)platform_device_register(&nslu2_uart);
 189
 190         platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
 191 }
 192
 193 MACHINE_START(NSLU2, "Linksys NSLU2")
 194         /* Maintainer: www.nslu2-linux.org */
 195         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 196         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 197         .boot_params    = 0x00000100,
 198         .map_io         = ixp4xx_map_io,
 199         .init_irq       = ixp4xx_init_irq,
 200         .timer          = &nslu2_timer,
 201         .init_machine   = nslu2_init,
 202 MACHINE_END